If it were me, then in order of preference I would go with
-1. S&W 686. I have always wanted one, and I will get one someday.
-2. S&W 57. I need a good DA revolver in my gunsafe, and this one would do quite nicely.
-3. Glock 23. I already have a Glock 22, so a 23 is not too different than what I already have.
-4. Ruger GP100. I love the Ruger SA revolvers, but I've just not been able to embrace their DAs. If I found one at a good price I would buy it in a heartbeat.
That is just me though.